From: Richard Smith <richard-llvm@metafoo.co.uk>
Date: Mon, 16 May 2016 22:53:19 +0000 (+0000)
Subject: Switch from SmallVector to TinyPtrVector for the list of attributes on a declaration... 
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=34805ee8ae799e69f9a501d8f822e52c06a39003;p=clang

Switch from SmallVector to TinyPtrVector for the list of attributes on a declaration. This removes a memory allocation for the common case where the declaration has only one attribute.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@269717 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/include/clang/AST/AttrIterator.h b/include/clang/AST/AttrIterator.h
index a0c803096a..b768e5636a 100644
--- a/include/clang/AST/AttrIterator.h
+++ b/include/clang/AST/AttrIterator.h
@@ -15,6 +15,7 @@
 #define LLVM_CLANG_AST_ATTRITERATOR_H
 
 #include "clang/Basic/LLVM.h"
+#include "llvm/ADT/TinyPtrVector.h"
 #include <iterator>
 
 namespace clang {
@@ -39,8 +40,8 @@ void operator delete[](void *Ptr, const clang::ASTContext &C, size_t);
 namespace clang {
 
 /// AttrVec - A vector of Attr, which is how they are stored on the AST.
-typedef SmallVector<Attr*, 2> AttrVec;
-typedef SmallVector<const Attr*, 2> ConstAttrVec;
+typedef llvm::TinyPtrVector<Attr*> AttrVec;
+typedef llvm::TinyPtrVector<const Attr*> ConstAttrVec;
 
 /// specific_attr_iterator - Iterates over a subrange of an AttrVec, only
 /// providing attributes that are of a specific type.